.twonav {
    border-top: 1px solid #eaeaea;
    background: #FFF;
    padding: 10px 0;
}

.twonav ul {
    list-style: none;
    margin-left: -4%;
}

.twonav ul li {
    float: left;
    display: block;
    margin-left: 4%;
}

.twonav ul li a {
    display: block;
    height: 30px;
    line-height: 30px;
    color: #666;
    font-size: 15px;
}

.twonav ul li a:hover {
    color: #f1570b;
}

.twonav ul li .cust {
    color: #f1570b;
}

.list {
    width: 100%;
    background: #eaeaea;
    padding: 20px 0 40px 0;
}

.list .title {
    padding-left: 20px;
    height: 48px;
    line-height: 48px;
    font-size: 16px;
}

.list .title a {
    display: inline-block;
    color: #555;
}

.list .title a:hover {
    color: #f1570b;
}

.list .title span {
    padding: 0 6px;
}

.relation-list {
    padding: 0 20px;
}

.relation-list ul {
    list-style: none;
    margin-left: -20px;
}

.relation-list ul li {
    display: block;
    float: left;
    width: 371px;
    height: auto;
    border: 1px solid #aaa;
    margin-left: 20px;
    margin-top: 20px;
    padding-bottom: 10px;
}

.relation-list ul li span {
    width: 371px;
    height: 208px;
    overflow: hidden;
    display: block;
    position: relative;
}

.relation-list ul li span:hover .video-icon {
    opacity: 1;
    -webkit-transition: all 0.5s ease-in;
    -moz-transition: all 0.5s ease-in;
    -ms-transition: all 0.5s ease-in;
    transition: all 0.5s ease-in;
}

.relation-list ul li span img {
    width: 100%;
    height: 100%;
    display: block;
    -webkit-transition: all 0.5s ease-in;
    -moz-transition: all 0.5s ease-in;
    -ms-transition: all 0.5s ease-in;
    transition: all 0.5s ease-in;
}

.relation-list ul li span img:hover {
    transform: scale(1.05);
    -moz-transform: scale(1.05);
    -webkit-transform: scale(1.05);
    -o-transform: scale(1.05);
}

.relation-list ul li h3 {
    display: block;
    padding: 7px 10px;
    font-size: 18px;
    height: 30px;
    line-height: 30px;
    overflow: hidden;
    color: #333;
}

.relation-list ul li b {
    display: block;
    height: 40px;
    padding: 0px 10px;
    line-height: 20px;
    color: #999;
    overflow: hidden;
    font-size: 15px;
    font-weight: normal;
}

.video-icon {
    opacity: 1;
    background: url(../Images/video-icon.png) no-repeat;
    background-size: 100%;
    width: 50px;
    height: 50px;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-left: -25px;
    margin-top: -25px;
    -webkit-transition: opacity 0.4s ease-in;
    -moz-transition: opacity 0.4s ease-in;
    -ms-transition: opacity 0.4s ease-in;
    transition: opacity 0.4s ease-in;
    cursor: pointer;
}

.video-c {
    text-align: center;
    padding: 5% 0;
}


/*  移动端  */

@media screen and (max-width:641px) {
    #sampleMovie {
        width: 90%;
        height: auto;
    }
}
